低渗透率储集层岩石热解气相色谱量化解释评价方法  

The quantitative interpretation and evaluation method for the gas chromatography of rock pyrolysis in lower permeability reservoir

作　　者：石艳芳[1] 

机构地区：[1]大庆钻探工程公司地质录井一公司

出　　处：《录井工程》2009年第4期27-30,39,共5页Mud Logging Engineering

摘　　要：岩石热解气相色谱分析技术已成为识别油水层的有效手段之一,随着勘探对象日趋复杂,单纯以谱图形态进行油水层解释评价,虽然具有直观且解释评价快速的特点,但由于标准形态界定采用非量化的方式,解释评价结果受人为因素影响较大,显然已不能满足精细勘探开发的需求。针对这一情况,在分析低渗透率储集层岩石热解气相色谱分析参数与油水关系的基础上,通过对英台、裕民地区11层67个样品的热解气相色谱分析参数与试油结果的统计对比分析,引入了量化表征碳数分布范围,反映有机质丰度、母质类型和演化程度的∑nC21-/∑nC22+比值和电测电阻率解释评价图板。应用表明,其油水层的解释评价符合率得到了一定程度的提高,尤其重要的是该图板的应用为岩石热解气相色谱的解释评价由单纯以谱图形态特征的判断向量化综合评价过渡起到了一定的导向作用。The gas chromatographic analytical technology of rock pyrolysis has become one of the effective means for distinguishing oil and water zones. With the gradual complexity of the exploration object,the interpretation and evaluation for oil and water zones with the only spectrum form can't obviously meet the demand of fine exploration and development though it has the direct and fast characteristics in interpretation and evaluation,as its standard form was determined in non-quantitative way and the results of the interpretation and evaluation are largely affected by artificial factors. According to this situation,on the basis of analyzing the relationship between gas chromatographic analytical data of rock pyrolysis and oil and water for lower permeability reservoir and by the statistic correlation of gas chromatographic analytical data of rock pyrolysis with oil test results for 67 samples of 11 zones in Yingtai and Yumin areas,the author introduced the ∑nC21-/∑nC22+ratio and the interpretation and evaluation chart of electrical logging resistivity which can express the range of carbon number quantitatively to reflect the abundance of organic matter,parent type and evolution degree. The application showed that the coincidence rate of the interpretation and evaluation for oil and gas zone had been improved at a certain extent,the more important point was that the application of the chart provided a certain guide function for the development of the interpretation and evaluation of gas chromatographic of rock pyrolysis from the single spectrum form to composite quantitative evaluation.

关 键 词：岩石热解 气相色谱 低渗透率 储集层 电阻率 油水层识别 解释评价 

分 类 号：TE142[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]